:root {
  color-scheme: light;
  --ink: #0f2a33;
  --wave: #0e7c8c;
  --wave-deep: #095a66;
  --wave-tint: #e3f2f3;
  --coral: #ff6b4a;
  --coral-text: #c1502f;
  --coral-tint: rgba(255, 107, 74, 0.12);
  --forest: #2e9e6d;
  --forest-text: #1f7a54;
  --forest-tint: rgba(46, 158, 109, 0.14);
  --slate: #6b8288;
  --slate-tint: rgba(107, 130, 136, 0.12);
  --amber: #d98a1f;
  --amber-tint: rgba(217, 138, 31, 0.12);
  --mist: #f3f7f8;
  --paper: #ffffff;
  --line: #dce6e8;
  --muted: #5c7075;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Manrope', -apple-system, system-ui, sans-serif;
  background: var(--mist);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

.topbar {
  padding: 22px 24px 16px;
  background: var(--paper);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 760px;
  margin: 0 auto;
}

.brand-mark {
  width: 40px;
  height: 40px;
  color: var(--wave);
  flex-shrink: 0;
}

.eyebrow {
  margin: 0 0 2px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wave);
}

.brand-text h1 {
  margin: 0;
  font-family: 'Unbounded', 'Manrope', sans-serif;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.wave-divider {
  display: block;
  width: 100%;
  height: 12px;
  color: var(--wave);
}

.wave-divider path {
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  opacity: 0.55;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 18px 24px 4px;
  max-width: 760px;
  margin: 0 auto;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1.5px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  font-family: 'Manrope', sans-serif;
  font-size: 13.5px;
  font-weight: 600;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.tab-btn:hover { border-color: var(--wave); }

.tab-btn.active {
  background: var(--wave);
  color: white;
  border-color: var(--wave);
}

.tab-count {
  font-size: 11px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(15, 42, 51, 0.08);
  color: var(--muted);
}

.tab-btn.active .tab-count {
  background: rgba(255, 255, 255, 0.22);
  color: white;
}

.tab-btn.remove {
  border: none;
  background: none;
  color: var(--muted);
  width: 22px;
  height: 22px;
  border-radius: 999px;
  padding: 0;
  font-size: 13px;
  line-height: 1;
}

.tab-btn.remove:hover {
  background: var(--coral-tint);
  color: var(--coral-text);
}

.tab-btn.add {
  border-style: dashed;
  color: var(--wave);
}

main {
  padding: 8px 24px 48px;
  max-width: 760px;
  margin: 0 auto;
}

.composer {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px;
  margin: 14px 0 18px;
  box-shadow: 0 1px 2px rgba(15, 42, 51, 0.04);
}

.composer input {
  flex: 1;
  min-width: 120px;
  padding: 9px 12px;
  border: 1px solid transparent;
  background: var(--mist);
  border-radius: 9px;
  font-family: 'Manrope', sans-serif;
  font-size: 14px;
  color: var(--ink);
}

.composer input:focus-visible {
  outline: 2px solid var(--wave);
  outline-offset: 1px;
  background: var(--paper);
}

.add-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  background: var(--wave);
  color: white;
  padding: 9px 16px;
  border-radius: 9px;
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.add-btn:hover { background: var(--wave-deep); }

.toolbar {
  display: flex;
  gap: 10px;
  margin: 4px 0 16px;
  flex-wrap: wrap;
}

.toolbar select,
.toolbar button {
  font-family: 'Manrope', sans-serif;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--muted);
  cursor: pointer;
}

.toolbar button.active {
  border-color: var(--wave);
  color: var(--wave);
  background: var(--wave-tint);
}

.task-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.task-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 4px solid var(--slate);
  border-radius: 10px;
  padding: 13px 15px;
  animation: card-in 0.2s ease;
}

.task-card[data-status="in_progress"] { border-left-color: var(--coral); }
.task-card[data-status="done"] { border-left-color: var(--forest); }

.task-card.overdue {
  border-left-color: var(--amber);
  background: var(--amber-tint);
}

.task-title {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--ink);
}

.task-meta {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--muted);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  border-radius: 999px;
  padding: 5px 11px 5px 8px;
  cursor: pointer;
  font-family: 'Manrope', sans-serif;
  font-size: 12.5px;
  font-weight: 700;
}

.status-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: currentColor;
}

.status-todo { background: var(--slate-tint); color: var(--slate); }
.status-in_progress { background: var(--coral-tint); color: var(--coral-text); }
.status-done { background: var(--forest-tint); color: var(--forest-text); }

.deadline {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.overdue .task-meta .deadline { color: var(--coral-text); font-weight: 700; }

.task-comment {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
  padding-top: 8px;
  border-top: 1px dashed var(--line);
}

.delete-btn {
  border: none;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  margin-left: auto;
  padding: 4px;
  border-radius: 6px;
}

.delete-btn:hover { background: var(--coral-tint); color: var(--coral-text); }

.empty-state {
  text-align: center;
  padding: 56px 20px;
  color: var(--muted);
}

.empty-state svg {
  color: var(--line);
  width: 40px;
  height: 40px;
  margin-bottom: 10px;
}

.empty-title {
  margin: 0 0 4px;
  font-family: 'Unbounded', sans-serif;
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
}

.empty-hint { margin: 0; font-size: 13.5px; }

@keyframes card-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .task-card { animation: none; }
  .tab-btn, .add-btn, .delete-btn { transition: none; }
}

@media (max-width: 480px) {
  .topbar, .tabs, main { padding-left: 16px; padding-right: 16px; }
  .brand-text h1 { font-size: 17px; }
}